336  Correspondence—Ir. 8S. S. Buckman—WMr. C. D. Sherborn. 
‘PALAONTOLOGICAL NOMENCLATURE, 
Srr,—Mr. Jukes-Browne and myself are as wide asunder as the 
poles in our wishes with regard to Ammonites; nor does he agree 
with Mr. Haddow in his method of using the trinomial system. As 
I cannot defend my numerous sins without asking for more space 
than the subject warrants, I will only notice one or two points. 
I did not know the form of the mouth was so potent a factor 
among Ammonites. My method is to try and trace out step by step 
the descent of each species, and to arrange them accordingly. I 
shall not place in one and the same genus two species of Inferior 
Oolite Ammonites, one of which has descended, say, from a Lower 
Lias Afgoceras, and the other from a Lower Lias Arietites, however 
similar they may be in mouth or otherwise, although Mr. Jukes- 
Browne thinks it would not be wrong. I disagree; and so the same 
genus will not include the descendants of two distinct genera. 
T agree with Mr. Jukes-Browne that, instead of amplifying an old 
system, it had been better to start afresh. The MS. to correct this 
has been written some time. Still his objection overshoots the mark. 
No one, I imagine, in naming the Sparrow would begin with Aves 
and end with Insessores, Conirostres, Fringillide, Passer domesticus. 
Mr. Jukes-Browne does not answer the point of my question, viz. 
about cornu, and does not attempt Lioceras. 
STONEHOUSE. S. S. Buckman. 
PARKINSON’S ‘‘ORGANIC REMAINS.” 
§rr,—Can you or any of the readers of the GronocicaL Magazine 
tell me the date of the sale of the Collection of Fossils formed by 
James Parkinson, the author of ‘Organic Remains,” as I wish to 
find some account of this sale in the literature of the time. From 
an examination of the ‘‘Sowerby Mineral Conchology ” collection 
in the British Museum of Natural History, I am led to suspect 
that some of Parkinson’s fossils had already been acquired by 
Sowerby, and if this really is so, these specimens will have a double 
interest. 
C. Davies SHERBORN. 
540, Kine’s Roan, S.W., 
21sé June, 1888. 
